Merge pull request #950 from zendesk/dasch-avoid-noop-merge

Avoid unnecessary Hash merges

Author: dasch

lib/kafka/datadog.rb

@@ -288,13 +288,13 @@ def produce_message(event)
  }
 
  # This gets us the write rate.
- increment("producer.produce.messages", tags: tags.merge(topic: topic))
+ increment("producer.produce.messages", tags: tags)
 
  # Information about typical/average/95p message size.
- histogram("producer.produce.message_size", message_size, tags: tags.merge(topic: topic))
+ histogram("producer.produce.message_size", message_size, tags: tags)
 
  # Aggregate message size.
- count("producer.produce.message_size.sum", message_size, tags: tags.merge(topic: topic))
+ count("producer.produce.message_size.sum", message_size, tags: tags)
 
  # This gets us the avg/max buffer size per producer.
  histogram("producer.buffer.size", buffer_size, tags: tags)